Max picot



(Specimens.)

M. PIOOT. ELASTIC WOVEN FABRIC.

m n I m Z. J.

UNITED STATES PATENT OFFICE.

MAX PICOT, OF PARIS, FRANCE.

ELASTIC WOVEN FABRIC.

SPECIFICATION forming part of Letters Patent No. 484,977; dated October 25, 1892.

Application filed August 12,1891. Serial No. 402,484. (Specimens) Patented in Belgium May 15, 1891 No. 94,779,andi11 Germany February 29, 1892, N0. 62.243.

To all whom it may concern:

Be it known that I, MAX P1001, a citizen of the Republic of France, residing at Paris, in the said Republic of France, haveinvented new and useful Improvements in Elastic lYgyen Fabrics, (for which I have obtained a patent in Belgium, No. 94,779, dated May 15,

1891, and in Germany, No. 62,2l3, dated February 29, 1892,) of which the following is a specification. I

Thisinvention relates toan improved woven fabric which is longitudinally elastic, the same being especially advantageous for use for surgical bindings, being devoid of seams, and being at the same time of any length necessary or desirable and containing no caoutchouc. The fabric is formed entirely of cotton, of wool, of linen, or silk, or combinations of such materials for the warps, as will shortly appear.

In the accompanying drawings the improved fabric is illustrated in so far as it is practicable to do so in this class of drawings.

Figure 1 is a perspective representation of a considerable longitudinally-rolled quantity of the fabric, a terminal portion thereof be ing shown as drawn out. Fig. 2 is an enlarged view of a section of the material, having for its object the illustration of the details of fabrication.

In the drawings, a and I) represent the warps of the fabric, and (Z the filling. The warps are of two characters, a half or series a thereof being formed of yarns, as ordinarily, while the other half or series I) of the warps are those which have been twisted much in excess of the degree of twisting given to the warps a. The latter warps have received before being embodied in the fabric a twisting of from two thousand to two thousand eight hundred revolutions in the length of one yard. These excessively-twisted warp-yarns have the tendency of looping, curling, or wrinkling and are difiicult of weaving; but by the exercise of skill under a proper mode of procedure and the employment of adequate means the weaving of the fabric embodying the series of warps having the ordinary amount of twist and the other series of warps having the said excessive degree of twist, substantially as explained, and the filling twisted as usual, is accomplished, and normally this fabric after having pursued the required process for its production has a multiplicity of transverse corrugations or small loops or wrinkles, as is in a manner illustrated at w and y in the drawings, Fig. 1. Said corrugations are mainly formed by the drawing together longitudinally of the ordinarily-twisted portions of the warp-threads when the excessively-twisted warp-threads are allowed to retract, and they constitute an element in the warp which limits the elastic elongation of the fabric, so that those portions of the warp which contain said excessive amount of twist shall not be subject to rupture by undue strain in the use of the fabric for the purpose below stated, and the said filling having the usual twist serves to prevent the expansion of the fabric transversely of its length, thereby preserving it in its normal width which is desirable for said purpose. The fabric throughout its entire longitudinal extent is caused to have the said corrugations or loops or wrinkles, owing to the reaction or looping tendency of the excessively-twisted warps, which act as springs to insure the similar looping or curling of the other warps, and consequently with both series of warps the filling. \Vhen the fabric has been finished, it has in practice such a degree of elasticity that it may be elongated from three to four times its normal length, and when the tension has been released the fabric may again assume approximately its original shortened dimension.

In Fig. 1 the fabric is shown as being grasped and the part intermediate of the crinkly or corrugated portions w and 3 stretched, so that its surface is flat, and in Fig. 2 the purpose is more especially to afford an enlarged view of the fabric, whereby the difierent yarns may be indicated by letters of reference. The small section of fabric shown is assumed to be in its elongated condition.

This fabric is of unusual advantagein surgery for the reason that it will, as bindings, by its elasticity remain firm and with a slight pressure on any part of the body, freely allowing movement of the bound-up part without slipping 01f or causing pain, and, moreover, being porous the wound may bein oommunication With the air.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

A longitudinally-elastic Woven fabric having a Warp consisting of a series of yarns to which are given the ordinary amountof twist and a second series of yarns to which are given an excessive amount of twist, substantially as described, and a fillilig to which is given the ordinary amount of twist, substantiaily as set forth.

MAX PICOT. Witnesses:

H. ENGELS, F. L. NoTTY. 

